癌胚抗原对呼吸道肿瘤的诊断价值评价不一 ,据报道恶性胸水中癌胚抗原的阳性率约为 50 % ,我们用酶联免疫法测定各类胸水中癌胚抗原水平。一、检测标本　共测胸水 1 39份 ,其中良性疾病胸水 65份 ,恶性胸水 74份。恶性肿瘤诊断均经病理学证实。二、测定方法和试剂　采德国宝灵 The diagnostic value of carcinoembryonic antigen on respiratory tumors is not the same, it is reported that the positive rate of carcinoembryonic antigen in malignant pleural effusion is about 50%, we use enzyme-linked immunosorbent assay to determine the level of carcinoembryonic antigen in various types of pleural effusion. First, the detection of a total of test specimens of 39 cases of pleural effusion, of which 65 cases of benign disease pleural effusion, 74 cases of malignant pleural effusion. Malignant tumors were confirmed by pathology. Second, the determination of methods and reagents mining German Po Ling